4. RADEON Gets Mobile, Continued

Here is a comparison between the two new competitors, listing their most important features:

Features	Mobility RADEON	Geforce2 Go
Core clock	Up to 200 MHz	Up to 143 MHz
Rendering Pipeline	1	2
Texturing Units Per Pipeline	3	2
Maximal Possible Pixel Fill Rate (highly depending on core clock)	200 Mpixel/s	386 Mpixel/s
Maximal Possible Texel Fill Rate (highly depending on core clock)	600 Mtexel/s	770 Mtexel/s
Integrated T&L Unit	no	yes
Video Memory	8/16 MB internal DDR SDRAM, up to 48 MB external SDR/DDR SDRAM	No internal memory, Up to 32 MB external SDR/DDR SDRAM
Width Of Internal Memory Interface	128-bit	N/a
Width Of External Memory Interface	32/64-bit	64/128-bit
Memory Types Supported	SDR-SDRAM / DDR-SDRAM	SDR-SDRAM / DDR-SDRAM
Maximal Possible Memory Bandwidth	6.4 GB/s internal / 3.2 GB/s external	5.4 GB/s
Memory clock	Up to 200MHz	Up to 166MHz
MPEG2/DVD Decoding Acceleration	Integrated iDCT, Motion Compensation	Motion Compensation
external TV Tuner	yes	no
Multiple Displays	HydraVision	Twinview

How would I implement Mobility RADEON in my theoretical notebook? How fast is fast enough for my notebook?

Target System is a 2 lbs mobile computer. This weight includes the battery, so the battery will be small. The battery run down time must be acceptable too. In such a case I would use a Mobility RADEON with integrated 8 MB at 66 MHz/1.5V. There is space for external memory and no expensive cooling for the graphic chip. This time I want to build a desktop replacement system. The large flat panel screen found in this kind of notebook has the benefit of providing a large notebook base with plenty of space. It will contain a high speed CPU and a nice, big, fast and fat graphics solution e.g. 32 MB video memory. Depending on the space, I would implement the chip with 16 MB of integrated memory at 200MHz/1.8V and two 2 Mbit/32-bit DDR chips next to it. If space is no limit, I might add four additional 2Mbit/32-bit DDR chips on the other side of the notebook motherboard and have a real 64 MB racing machine. For the value segment I'd suggest the Mobility RADEON chip with 16 MB of integrated memory at 166MHz/1.7V. An 8 MB version with optional 8 MB of external memory would be nice too, depending on the chip footprint. If thermal problems arise, just lower the voltage or the clock speed.